<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @copyright   Copyright (c) 2014 X.commerce, Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */
namespace Magento\Paypal\Model\Method\Checks;

use Magento\Payment\Model\Checks\PaymentMethodChecksInterface;
use Magento\Sales\Model\Quote;
use Magento\Payment\Model\Checks\SpecificationInterface;
use Magento\Paypal\Model\Billing\AgreementFactory;

class SpecificationPlugin
{
    /**
     * @var AgreementFactory
     */
    protected $_agreementFactory;

    /**
     * @param AgreementFactory $agreementFactory
     */
    public function __construct(AgreementFactory $agreementFactory)
    {
        $this->_agreementFactory = $agreementFactory;
    }

    /**
     * Override check for Billing Agreements
     *
     * @param SpecificationInterface $specification
     * @param \Closure $proceed
     * @param PaymentMethodChecksInterface $paymentMethod
     * @param Quote $quote
     * @return bool
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    public function aroundIsApplicable(
        SpecificationInterface $specification,
        \Closure $proceed,
        PaymentMethodChecksInterface $paymentMethod,
        Quote $quote
    ) {
        $originallyIsApplicable = $proceed($paymentMethod, $quote);
        if (!$originallyIsApplicable || $paymentMethod->getCode() != 'paypal_billing_agreement'
            || !$quote->getCustomerId()
        ) {
            return $originallyIsApplicable;
        }
        $availableBA = $this->_agreementFactory->create()->getAvailableCustomerBillingAgreements(
            $quote->getCustomerId()
        );
        return count($availableBA) > 0;
    }
}
